478994789 has 8 divisors (see below), whose sum is σ = 589532160. Its totient is φ = 378984816.

The previous prime is 478994779. The next prime is 478994797. The reversal of 478994789 is 987499874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 478994789 - 2⁴ = 478994773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478994749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2631749 + ... + 2631930.

It is an arithmetic number, because the mean of its divisors is an integer number (73691520).

Almost surely, 2^478994789 is an apocalyptic number.

It is an amenable number.

478994789 is a deficient number, since it is larger than the sum of its proper divisors (110537371).

478994789 is a wasteful number, since it uses less digits than its factorization.

478994789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263699.

The product of its digits is 36578304, while the sum is 65.

The square root of 478994789 is about 21885.9495795819. The cubic root of 478994789 is about 782.4265812501.

The spelling of 478994789 in words is "four hundred seventy-eight million, nine hundred ninety-four thousand, seven hundred eighty-nine".